Question

6(3c+4d)+3(2(c-5d)?;!**#*

Answer 1

6(3c + 4d) + 3(2(c - 5d)
= 18c + 24d + 3(2c - 10d)
= 18c + 24d + 6c - 30d
= 24c - 6d
= 6(4c - 1)

Answer 2

6(3c+4d)+3(2(c-5d)
3(2(c-5d) ⇒ 3(2c-10d) 

=  6 (3c) + 6 (4d) + 3 (2c-10d) 
= 18 c + 24 d + 6c - 30 d
= 18c + 6c + 24 d - 30 d 
= 24 c - 6d